♨️ Koller Basic Whirlpool Bath Pump – 0.55kW Single Speed

Quiet, reliable performance with pneumatic control for whirlpool baths

💧 Product Overview

The Koller Basic Whirlpool Bath Pump (0.55kW) is a popular and reliable pump commonly fitted to whirlpool baths from UK high street retailers such as B&Q, as well as models produced by European and Chinese manufacturers. With a power output of 0.74HP (0.55kW), this pump delivers excellent performance for whirlpool baths with 6–8 jets.

Featuring silent-running motors with Koller’s C-Profile mount system, this pump ensures smooth, quiet performance and easy installation. The self-drain wet end prevents water stagnation when the pump is switched off, whilst the built-in pneumatic (air) switch enables convenient on/off control via air buttons or electronic control systems.

This pump is a trusted choice across the UK for both replacement and new installations, offering the power, durability, and quiet efficiency needed for long-lasting operation in residential and commercial whirlpool bath applications.

✨ Key Features

• ✅ Motor Power: 0.55kW (0.74HP) – Ideal power output for mid-sized whirlpool baths
• ✅ Power Input (P1): 0.80kW – Efficient energy consumption
• ✅ Single-Speed Operation – Reliable, consistent performance
• ✅ Self-Drain Wet End – Water drains automatically, preventing stagnation and bacterial growth
• ✅ Pneumatic (Air) Switch Included – Built-in air switch for easy on/off control
• ✅ 6–8 Jet Capacity – Perfect for medium-sized whirlpool bath systems
• ✅ 1.5″ Male Buttress Threads – Industry-standard 63mm OD connections
• ✅ C-Profile Mount System – Compatible with Koller Quick Fix Vario supports
• ✅ Silent-Running Motor – Quiet operation ideal for residential bathrooms
• ✅ 220–240V / 50Hz – UK-compatible electrical supply

⚙️ Technical Specifications

Specification	Value
Brand	Koller
Series	Basic
Pump Type	Circulation / Jet
Motor Power (Output)	0.55 kW (0.74 HP)
Power Input (P1)	0.80 kW
Horsepower Range	0.55–1.0 HP
Speed Settings	Single Speed
Voltage	220–240V
Frequency	50 Hz
Self-Drain	Yes
Air Switch	Yes (Pneumatic)
Jet Capacity	6–8 jets
Connection Size	1.5″ Male Buttress Thread
Connection Diameter	63 mm (OD)
Thread Type	Male Buttress
Mount System	C-Profile (Quick Fix Vario compatible)
Length	315 mm
Spare Parts Available	No
MPN	2612-WEP
SKU	PMP-3632

⚡ Electrical Requirements

Electrical Spec	Requirement
Supply Voltage	220–240V
Frequency	50 Hz
Phase	Single Phase
Power Input (P1)	0.80 kW
Control Type	Pneumatic (Air) Switch

⚠️ IMPORTANT ELECTRICAL SAFETY NOTICE:

All electrical work must be carried out by a qualified electrician in accordance with UK wiring regulations (BS 7671). Hot tub and whirlpool bath installations require RCD protection (30mA) for safety. Never attempt electrical connections yourself unless you are a qualified professional.

🔄 Compatibility Guide

Connection Sizing

The Koller Basic uses industry-standard 1.5″ connections. Hot tub industry terminology differs from actual measured dimensions:

Industry Term	Actual Outside Diameter
1.5″ Connection	Approximately 63 mm
2.0″ Connection	Approximately 79 mm
2.5″ Connection	Approximately 92 mm

💡 Tip: Always measure your existing connections carefully before ordering.

This Pump Features:

• 📍 Wet End Type: Self-Drain
• 📍 Thread Type: Male Buttress
• 📍 Connection Size: 1.5″ / 63mm OD
• 📍 Mount System: C-Profile
• 📍 Air Switch: Yes (built-in pneumatic)

Compatible Applications:

This pump is commonly found in:

• Whirlpool baths from UK retailers including B&Q
• European-manufactured whirlpool systems
• Chinese hot tub and whirlpool bath imports
• Systems requiring pneumatic (air button) control

Note: Unions are sold separately. Ensure compatibility with your existing plumbing configuration before purchase.

🛠️ Installation Requirements

Mounting

Requirement	Specification
Mount System	C-Profile
Compatible Support	Koller Quick Fix Vario
Pump Length	315 mm
Base	Solid, level, vibration-dampening surface
Access	Allow adequate clearance for maintenance

Plumbing Connections

Connection	Size
Inlet	1.5″ / 63mm OD Male Buttress Thread
Outlet	1.5″ / 63mm OD Male Buttress Thread
Unions	Sold separately

Self-Drain Operation

The self-drain design draws water via the inlet situated at the bottom of the wet end front face. When the pump is switched off, water drains back through this connection, returning to the bath and down the plug hole. This design:

• ✅ Prevents standing water in the pump
• ✅ Reduces risk of bacterial growth
• ✅ Extends pump and seal life
• ✅ Simplifies maintenance

Pneumatic (Air) Switch Operation

The built-in pneumatic switch enables on/off control via:

• Air buttons mounted on the bath surround
• Electronic control systems with air switch output
• Standard topside controllers

Installation Notes:

⚠️ Installation must be carried out by a competent individual or tradesperson trained within the industry

⚠️ Never run the pump dry – this will cause seal damage

⚠️ Ensure proper electrical bonding to earth as per BS 7671

⚠️ Unions sold separately – ensure compatible unions are ordered

🔧 Maintenance Guide

Routine Maintenance

Task	Frequency	Notes
Check for leaks	Monthly	Inspect around seal area and union connections
Inspect unions	Monthly	Tighten if necessary to prevent water loss
Listen for unusual noise	Weekly	Normal operation should be quiet
Check motor ventilation	Quarterly	Keep air vents clear of debris
Test air switch operation	Monthly	Ensure pump responds to air button
Visual inspection	Monthly	Look for signs of wear or damage

Self-Drain System Care

The self-drain feature significantly reduces maintenance requirements by preventing water stagnation:

• Ensure drain pathways remain clear and unobstructed
• Check that water drains completely after each use
• Inspect the inlet area periodically for debris buildup

Warning Signs – Consider Replacement If:

• ❌ Unusual grinding or screeching noises
• ❌ Water leaking from the seal area
• ❌ Motor trips the circuit breaker repeatedly
• ❌ Noticeably reduced water flow
• ❌ Motor overheating during operation
• ❌ Air switch not responding
• ❌ Excessive vibration

🛁 Ideal Applications

Application	Suitability	Notes
♨️ Whirlpool Bath (6–8 jets)	✅ Excellent	Primary intended use
♨️ Spa Circulation Pump	✅ Good	Suitable for circulation duties
🛁 Whirlpool Bath Replacement	✅ Excellent	Direct replacement for Koller Basic pumps
♨️ Small Hot Tub	✅ Good	European and Chinese models
♨️ Large Hot Tub (12+ jets)	❌ Not Recommended	Consider higher power models

Perfect For:

• Residential whirlpool baths with 6–8 jets
• B&Q and UK high street whirlpool bath replacements
• European-manufactured whirlpool systems
• Systems requiring pneumatic control
• Replacement for existing Koller Basic 0.55kW pumps

❓ Frequently Asked Questions

Q: What power output does this pump have? A: The Koller Basic has a motor power output of 0.55kW (0.74HP) with a power input (P1) of 0.80kW.

Q: How many jets can this pump support? A: This pump is suitable for whirlpool baths with 6–8 jets.

Q: Will this pump fit my whirlpool bath? A: This pump uses 1.5″ male buttress thread connections (63mm OD) with the Koller C-Profile mounting system. Measure your existing pump’s connections and mounting arrangement to confirm compatibility.

Q: Does this pump include an air switch? A: Yes, this pump has a built-in pneumatic (air) switch for on/off control via air buttons or electronic control systems.

Q: What voltage does this pump require? A: The pump operates on 220–240V at 50Hz (UK standard). All electrical installation must be performed by a qualified electrician.

Q: Is this pump single-speed or dual-speed? A: This is a single-speed pump designed for consistent, reliable operation.

Q: What size are the ports? A: Both inlet and outlet are 1.5″ male buttress threads with an outside diameter of approximately 63mm.

Q: Are unions included? A: No, unions are sold separately. Ensure you order compatible unions for your plumbing configuration.

Q: What is the pump length? A: The pump length is 315mm.

Q: Can spare parts be purchased separately? A: No, spare parts are not currently available for this pump series. If service is required, replacement of the complete unit is recommended.

Q: How do I know if my pump needs replacing? A: Signs include unusual noises (grinding, screeching), water leaking from the seal, reduced water flow, motor tripping the breaker repeatedly, air switch not responding, or overheating.

🏆 Why Choose the Koller Basic 0.55kW Pump

• ✅ Proven Reliability – Widely used across UK whirlpool bath installations
• ✅ Silent-Running Motor – Quiet operation ideal for residential bathrooms
• ✅ Self-Drain Technology – Prevents water stagnation and extends pump life
• ✅ Built-in Pneumatic Switch – Convenient air button control included
• ✅ 6–8 Jet Capacity – Perfect for medium-sized whirlpool baths
• ✅ Easy Installation – C-Profile mount system with Quick Fix Vario compatibility
• ✅ UK Electrical Compatibility – 220–240V / 50Hz supply

🤝 Why Buy From Parts4Tubs

• ✅ UK-Based Company – Local support and fast domestic delivery
• ✅ Expert Advice – Knowledgeable team ready to assist with compatibility questions
• ✅ Fast UK Delivery – Get your replacement pump quickly to minimise downtime
• ✅ Competitive Pricing – Great value on genuine spa and whirlpool parts
• ✅ Full Warranty Support – Peace of mind with manufacturer-backed warranties
• ✅ Easy Returns – Hassle-free returns policy within 30 days
• ✅ Quality Parts Guarantee – Only genuine, high-quality components

✨ Summary

The Koller Basic Whirlpool Bath Pump (0.55kW) is a quiet, reliable, and efficient single-speed pump designed for whirlpool baths with 6–8 jets. With 0.55kW (0.74HP) output power, self-drain technology, built-in pneumatic air switch, and industry-standard 1.5″ male buttress connections (63mm OD), this pump delivers dependable performance. Operating on 220–240V / 50Hz UK supply, with C-Profile mounting for easy installation, it’s the trusted choice for B&Q whirlpool baths and European spa systems.